₦airaland Forum

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AutoElectNG:
In very simple terms, when AC is turned on, the load on the engine increases, when the load on the engine increases, more heat is created, which needs to be taken away, that is the purpose of the cooling system which is operates partly on mechanical principles, and partly electrical principles.

The vehicle can run the fans at several speeds cycling faster or slower depending on the demands based on the various inputs the system receives.

Right now, the ECU/PCM/ECM has the ability to control the fan as directed, but that control has been taken away from it by your Kazeem who decided to do a direct connection to the ignition - which as you must have guessed is set to one speed which is sufficient to cool the car without the AC but is insufficient to cool the car when the AC comes on.



It is true that you don't have a thermostat, but the key issue to returning the vehicle to factory specifications is to return the control to the ECU/PCU/ECM ASAP because at the moment it is powerless to respond to demands for additional cooling, as the vehicle was designed, it will keep the fans running at the highest speeds for as long as it is necessary to stabilize the temperatures and then turn them off, that is more effective than a one-speed setting which you currently run, and then we can replace the thermostat.

That is my diagnosis.

If you need me to do it for you, or you need me to provide you the wiring diagrams, or direct you or your trusted mechanic or electrician on the step by step actions to make this a reality, then pay to play comes into the picture.

Do the above, and everything will be back to normal.

Oga, I think say the awoof insurance go cover the pay to play o

Anyways, thanks again for the diagnosis. So how do we proceed? Any number to call you? Or can you PM with contact details?
Thanks

AutoElectNG:
If I understand what is going on well, at all other times while the AC is not on, the vehicle does not overheat.

I am going to paint some scenarios, I want you to tell me which of them is correct, or if all of them are correct!

The vehicle overheats when the AC comes on for like 30 minutes. Right or wrong? If the AC was not on throughout the journey the vehicle would not overheat? Please confirm or disprove.

The vehicle only overheats when the AC is not on but in heavy traffic. In other words, as long as traffic is free flowing no overheating, but the moment traffic snarls, the vehicle starts overheating. Right or wrong?

Yes sir. Car ONLY overheat when AC is turned on for 30mins or an hour at most, especially when traffic snarls. If traffic is flowing temperature rises but takes longer before going high which it eventually does.

Without AC on car never overheats.

AutoElectNG:
COOLING SYSTEM ISSUES

1. Do you use coolant or just water?

2. Do you have the thermostat that was removed?

3. Can you purchase a brand new replacement thermostat?

4. Other than the thermostat, were any electrical modifications made? If yes, do you know what those are/were?

5. Can you confirm that your cooling system has no leak? hoses or the reservoir if your vehicle uses one or even the radiator itself

6. Do your fans (assuming the vehicle has 2) when the AC is turned on?

7. Do your fans come on when the vehicle is very hot but the AC is not on?

8. Do your fans come on as soon as the ignition switch turns on?

SOUNDS

9. What is the mileage of this vehicle?

10. How many belts does it use? I should not be asking but I have not bothered to check the documentation at this point in time, so you tell me.

11. Do you know the recommended replacement interval for those belts?

12. Have you replaced them according to the specification?

13. Are you low on refrigerant?

14. Do you have a loose hose connection?

15. Do you have hoses that are so dry that they no longer function effectively.

The noise could be a belt problem, or a pulley problem or a compressor problem. Get someone you trust that is mechanically inclined to check, and you can also get a second opinion just be on the safe side. You may need to meet a mech tech and an ac technician for diagnosis as opposed to repair so we can zero in on what's wrong.

If we reverse everything that was messed up, we should be good.

97 Maxima what trim? So I can do further checks for you later.

1. I used (freezetone) coolant only prior to the AC issue. But since I haven't been using the AC, been using water.

2. No I don't have the removed thermostat but I wouldn't mind buying another one if that will help in solving the issue.

3. The only electrical modification was on the fans (double) which they connected direct. Comes on once the ignition is turn on.

4. Yes there were leaks from some hoses which I have replaced. Also changed the hose clips that were loose.

5. Car has 100k plus on mileage. Has Two belts power steering and compressor I believe. Honestly I don't know about belt change intervals, only changed the belts on two occasions when it cut. Also do my normal servicing every three months (oil change and filter change) I've been using Mobile 20-50w. I don't know if that's okay but I haven't had any issues for the past one year I've been using it.

I don't know about Refrigerant o. I thought that's what's supposed to make the AC cool. AC just dey blow hot air. Will take it to a technician as you suggested. I watched on YouTube to replace hoses that makes squeaky sound when it is squeezed so I had a couple from the radiator that I replaced too.
Car trim is GLE.

I really appreciate your help. Thanks

AutoElectNG:
Using a cause and effect principle.

What happened before recently....

Scan and post the codes here.

Full vehicle service history prior to this development is crucial to finding a lasting remedy.

I have an idea what is wrong, but I need to know from you what has gone wrong also.

In other words, a fact check/reality check on what is peculiar to this ride that might be responsible for this condition viz a viz what ought to be.

Hmm. Reading how articulate your responses are shows that you really know your onions abi ur tools in this case.

To your question, before recently car runs as smooth as butter. Then sometime early this year I experienced the first overheating in traffic. Took it to one kazeem and before I say Kai, Oga we go remove the thermostat. Our weather too hot na why ur car dey overheat. Na so we dey do am. What do I know so I said fine. True overheating stopped for a while.

Then I was driving home one day and started hearing this wheezing sound from under the hood. Turned out to be coming from around where the steering belt and compressor is but I couldn't figure which it was. And sound comes out once the AC is turned on. Two days later the wheezing sound stopped and AC started blowing warm. Even now, without having the AC on I sometimes feel warm air blowing from the vents. And that's where I am with my baby now.

OK boss.
Mine is 97 maxima. Recently car started overheating when I have AC on for like 30mins and it's even worse in traffic. Then all of a sudden it's blowing hot air and airbag light came on blinking and has remained.

Also notice that car drags when I throttled down, like its got an added load on the engine (without the AC on).

AutoElectNG:
Please come back on June 1, 2017
Includes Nissan and Infiniti Coverage

Oga autoelect, June 1 na yesterday. Abi you don change mind?

mayor2013:
Starting July 7th when multi autolab would be having her anniversary, we have decided to launch the autel maxi sys elite on your cars for free. As the date draws nearer i shall update the thread. Stay tuned let your rides have a feel of the autel maxi sys elite

I don sign up for the awoof o. My car dey wait jejely

MostBanned:
Well, i still don't know the meaning because i didn't read that long epistle

babyfaceafrica:
my friend go an sit down, there is a reason why we were taught summary in school.

salaboiz:
I didn't read it....summary pls

Laple0541:
sum1 should pls summarise, seems the Op no do summary for sec school.

gypsey:
all this long grammar just to say struggle continue, any one else read this long story? or is it just only me.

[size=13pt]

I weep for Nigerian youths.
Emancipate yourself from this mental slavery...none but yourself can free your mind.
I got tired of quoting these blank minds. SMH.
Sad! Sad!! Sad!!![/size]

angrybird007:
I have not dealt with you and i know u are a scammer?i dont have time to keep explaining.
Gullible people will patronise you but those that have ears have been warned.SCAMMER

Why don't you tell us what your dealing with him was and how he scammed you or just shut up and let the man be?

08180423165

Oga. Why you no wan buy better phone to help your ministry? Your image quality follow dey pursue potential customers..na wa o.

This guy never serious.

Where are you located? How do you diagnose the issue with the car in the first place?

1997 Nissan maxima bought last year. Mean! The ride get class. I realized that most of the time, a lot of people that give advices on a particular thing never ever experienced the stuff. Na so dem dey talk say maxima na fuel consumer...I go dey pay tithe to mechanic every week. Truth is, if you have a good maintenance culture there's no car that is problematic.

Jabioro:
"You got an alert that new beneficiary had been setup in your account " This quoted line had a lot of meaning.. How can you set up a new beneficiary in your account without physically present in your domiciled branch or whatever branch you opted for without filled some some pages of form better still write a letter to that effect ?May term beneficiary in this context mean you about to transfer funds to another account.... give your branch the court order..

Bros you can add beneficiary from anywhere through your phone or computer using your token or pin.

Oh. Don't underestimate the power of social media. Use every available platform and make as much noise. There's this page on facebook Consumer Activist. They are good. If you don't mind I go help you broadcast the issue. 1 milla no be here o

Bros I hail o.
How much will clear the following
Lexus es330 2003
Toyota corolla 2003
Sienna 2004

Shipping line am considering is grimaldi from New York

acunon:
Here
It does plays all format

OK. Please if you the time kindly post more pictures

acunon:
There is one samsung, 60k sir

Picture please. Abeg verify if it plays DVD from all region. Thanks

acunon:
How many tall boys?

Four

Acunon, can you check for a good Samsung or Panasonic home theater for me? Preferably black and the price?

Mr rev, please can you show me pictures of available baby walker and price? Thanks

Oga, I don't know why you don't want to look my side. Please let me know if you have baby walker in stock and whats the landing cost. Am in Lagos.

Oya my people. Now in stock.

Complete your Acunon Electronics swag with the big boys 3D wall clock. Only 8k/pc. Limited stock available. #LagosLocationOnly

rev2214:
Baby walker is available

OK. Please can you post some pics and prices? And whats the mode of payment

Hello, do you have the baby walker now? Please pic and price. Thank you.